php-doc-en/reference/svn/functions/svn-log.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<refentry id="function.svn-log">
 <refnamediv>
  <refname>svn_log</refname>
  <refpurpose>Returns the commit log messages of a repository URL</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>array</type><methodname>svn_log</methodname>
   <methodparam><type>string</type><parameter>repos_url</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>revision_no</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>svn_log</function> returns the complete history of the item at the repository URL
   <parameter>repos_url</parameter>, or the history of a specific revision
   if <parameter>revision_no</parameter> is set. This function is equivalent
   to <userinput>svn log --verbose -r $revision_no $repos_url</userinput>.
  </para>
  <warning>
   <para>
    For repositories with large histories, the output may
    be quite large (one array item for every revision of the item).
    This function does not support the
    <userinput>--limit NUM</userinput> flag, nor does it support revision
    ranges (<userinput>revision_no</userinput> must be an integer).
   </para>
  </warning>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>repos_url</parameter></term>
     <listitem>
      <para>
       Repository URL of the item to retrieve log history from.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>revision_no</parameter></term>
     <listitem>
      <para>
       Revision number of the log to retrieve. Use
       <constant>SVN_REVISON_HEAD</constant> to retrieve the log for
       the most recent revision.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>

 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   On success, this function returns an array file listing in the format
   of:
   <screen>
<![CDATA[
[0] => Array, ordered most recent (highest) revision first
(
    [rev] => integer revision number
    [author] => string author name
    [msg] => string log message
    [date] => string date formatted per ISO 8601, i.e. date('c')
    [paths] => Array, describing changed files
        (
            [0] => Array
                (
                    [action] => string letter signifying change
                    [path] =>  absolute repository path of changed file
                )
            [1] => ...
        )
)
[1] => ...
]]>
    </screen>
  </para>
  <note>
   <para>
    The output will always be a numerically indexed array of arrays,
    even when there are none or only one log message(s).
   </para>
  </note>
  <para>
   The value of <varname>action</varname> is a subset of the
   <ulink url="&url.svn.manual.status;">status output
   in the first column</ulink>, where possible values are:
  </para>
  <table>
   <title>Actions</title>
   <tgroup cols="2">
     <thead>
      <row>
       <entry>Letter</entry>
       <entry>Description</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>M</entry>
       <entry>Item/props was modified</entry>
      </row>
      <row>
       <entry>A</entry>
       <entry>Item was added</entry>
      </row>
      <row>
       <entry>D</entry>
       <entry>Item was deleted</entry>
      </row>
      <row>
       <entry>R</entry>
       <entry>Item was replaced</entry>
      </row>
     </tbody>
    </tgroup>
  </table>
  <para>
   If no changes were made to the item, an empty array is returned.
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  &warn.experimental.func;
 </refsect1>

 <!-- Use when ERRORS exist
 <refsect1 role="errors">
  &reftitle.errors;
  <para>
   When does this function throw E_* level errors, or exceptions?
  </para>
 </refsect1>
 -->

 <!-- Use when a CHANGELOG exists
 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>Enter the PHP version of change here</entry>
       <entry>Description of change</entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>
 -->

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>svn_log</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
print_r( svn_log('http://www.example.com/', 23) );
?>
]]>
    </programlisting>
    &example.outputs.similar;
    <screen>
<![CDATA[
Array
(
    [0] => Array
    (
        [rev] => 23
        [author] => 'joe'
        [msg] => 'Add cheese and salami to our sandwich.'
        [date] => '2007-04-06T16:00:27-04:00'
        [paths] => Array
            (
                [0] => Array
                    (
                        [action] => 'M'
                        [path] =>  '/sandwich.txt'
                    )
            )
    )
)
]]>
    </screen>
   </example>
  </para>
  <para>
   <example>
    <title>Simulating <userinput>--limit</userinput> with <userinput>svn</userinput> and <function>svn_log</function></title>
    <para>
     This sample function simulates the <userinput>--limit</userinput> switch
     by using the SVN executable to return a list of revisions, which
     are then losslessly accessed using <function>svn_log</function>.
    </para>
    <note>
     <para>
      This function will perform a total of <parameter>limit</parameter> + 1
      requests: the first request to pull the required revisions, and
      each one after to retrieve the log item for that request.
     </para>
    </note>
    <programlisting role="php">
<![CDATA[
<?php
/**
 * Retrieves the last $limit log entries.
 * @param $repos_url Repository URL of item to get logs for
 * @param $limit Integer limit of items
 */
function svn_log_limit($repos_url, $limit) {
    $limit = (int) $limit;
    if ($limit <= 0) return array();
    // -q flag used to prevent server from sending log messages
    $output = shell_exec("svn log -q --limit $limit $repos_url");
    preg_match_all('/^r(\d+) /m', $output, $matches);
    $ret = array();
    foreach ($matches[1] as $rev) {
        $log = svn_log($repos_url, (int) $rev);
        $ret[] = $log[0]; // log is only one item long
    }
    return $ret;
}
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member>
     <ulink url="&url.svn.manual.log;">
      SVN documentation on svn log
     </ulink>
    </member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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